public IActionResult DeleteStaffMember(int id)
        {
            var staffMemberFromRepo = _supermarketRepository.GetStaffMemberById(id);

            if (staffMemberFromRepo == null)
            {
                return(NotFound());
            }

            _supermarketRepository.DeleteStaffMember(staffMemberFromRepo);

            if (!_supermarketRepository.Save())
            {
                throw new Exception($"Deleting staff member {id} failed on save.");
            }

            return(NoContent());
        }